Submission #394315

#	Time	Username	Problem	Language	Result	Execution time	Memory
394315		snasibov05	Connecting Supertrees (IOI20_supertrees)	C++14	0 / 100	1094 ms	14396 KiB

This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.

supertrees

#include "supertrees.h" #include <vector> using namespace std; int construct(vector<vector<int>> p) { int n = p.size(); vector<vector<int>> answer(n, vector<int>(n)); vector<int> cmp_n(n, -1); vector<vector<int>> cmp; int k = 0; for (int i = 0; i < n; ++i) { for (int j = 0; j < i; ++j) { if (p[i][j] == 1){ cmp_n[i] = cmp_n[j]; cmp[cmp_n[i]].push_back(i); } } if (cmp_n[i] == -1) cmp_n[i] = k++, cmp.push_back({i}); } for (int i = 0; i < cmp.size(); ++i) { for (int j = 0; j < cmp[i].size(); ++j) { for (int l = 0; l < cmp[i].size(); ++l) { if (p[cmp[i][j]][cmp[i][l]] == 0) return 0; if (j == 0 && l != 0) answer[cmp[i][j]][cmp[i][l]] = answer[cmp[i][l]][cmp[i][j]] = 1; } } } build(answer); return 1; }

Compilation message (stderr)

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:23:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |     for (int i = 0; i < cmp.size(); ++i) {
      |                     ~~^~~~~~~~~~~~
supertrees.cpp:24:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |         for (int j = 0; j < cmp[i].size(); ++j) {
      |                         ~~^~~~~~~~~~~~~~~
supertrees.cpp:25:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |             for (int l = 0; l < cmp[i].size(); ++l) {
      |                             ~~^~~~~~~~~~~~~~~

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